Biodegradable Ozone Toxic Substances Control Act 
Environmental Science
JULY 30, 2018
There are only 6 NAAQS - ozone, carbon monoxide, particulates, lead, sulfur dioxides, and nitrogen dioxides - but they dominate most air quality concerns ranging from smog to health effects, such as from particulates and lead. There remain some problem areas; for example Boston tends to be a non-attainment area for ozone in the summer.
Environmental Science
SEPTEMBER 7, 2018
Biodegradable : Used to describe substances and the ability of microorganisms (bacteria, algae) to break it down. They are water vapor, carbon dioxide, methane, nitrous oxide, ozone, CFCs, and hydrofluorocarbons. Ozone layer : A protective layer of gas in the upper atmosphere that absorbs the sun's must harmful radiation.
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